SQUELCH - Squelch controls the audio of the radio, turning it on or off. If the squelch is turned down and you are not receiving a signal, you will hear background static. This is normal, but can be annoying. To avoid hearing the background static, slowly turn up the squelch just until the noise stops. This is the normal operating position for the squelch. If your radio receives a transmission, the squelch will "open up" and you will hear the transmission. When the transmission goes away, the squelch will "close" and you will not hear the background static. Do not turn the squelch any higher than necessary, otherwise your receive range will be reduced.
Recommended Setting: Slowly turn up the squelch just until the background static stops.
RF GAIN - RF Gain controls the receiver sensitivity. Normally you would have the RF Gain turned up all the way for maximum sensitivity (and maximum range). If the other person is nearby and you are receiving a strong signal, you can turn the RF Gain down. This will provide very quiet reception.
Recommended Setting: Fully clockwise.
DYNAMIKE - This control amplifies your voice to make you sound louder. It is like a built-in power mike. Normally you would have this control turned all the way up. If you are using a power mike and you experience squealing or distortion, try turning down the Dynamike.
Recommended Setting: Fully clockwise.
DELTA TUNE - If the other person's CB is a little off-frequency, their signal may sound a little distorted. If so, you can adjust the Delta Tune to clarify their voice. Delta Tune only affects received signals, it has no effect on transmit. Normally you would leave the Delta Tune at the 12:00 position.
Recommended Setting: The 12:00 position.
S/RF, SWR, CAL SWITCH - The normal operating position is the S/RF position. In the S/RF position the meter will show transmit power and receive signal strength. The CAL and SWR positions are only for checking the SWR of the antenna.
Recommended Setting: The S/RF position.
SWR - This is a measure of antenna performance. It tells you how well the antenna system is tuned to the CB band. The procedure to check SWR:
- Set the S/RF switch to the CAL position.
- Press the button on the microphone and adjust the SWR CAL knob until the needle is on the triangle marker in the upper-right corner of the meter.
- While still holding the button on the microphone, set the switch to the SWR position.
- Read the SWR along the top scale of the meter. For proper operation the SWR must be below 3.
AUTOMATIC NOISE LIMITER (ANL) and NOISE BLANKER (NB)- These are noise filters, to help eliminate engine noise.
Recommended setting: The NB/ANL position.
PA SWITCH - To use PA (Public Address), you need to connect a loudspeaker to the PA jack on the back of the CB. When you talk into the microphone, you will be heard over the loudspeaker. The Dynamike setting will control PA volume. Please note that you will hear CB reception through the PA speaker. This is a feature to allow you to monitor CB traffic while out of your vehicle. If you do not want to hear the CB reception, just turn the volume control down.
Recommended Setting: The CB position (unless you want to use PA).
CH9 SWITCH - Channel 9 is reserved for emergency use only. This switch provides instant access to channel 9. In order to select other channels, this switch must be in the NORMAL position.
Recommended Setting: The NORMAL position.